JP7025746B2 - Method of manufacturing chemical solution supply device and chemical solution supply device - Google Patents

Description

The present invention relates to a chemical solution supply device and a method for manufacturing the chemical solution supply device.

Conventionally, in order to relieve or relieve a patient's pain, a drug solution such as an analgesic has been periodically administered to the patient. Therefore, patients must visit the hospital regularly or stay in the hospital for a long period of time. Regular injection of a drug solution such as an analgesic into a patient is burdensome for both the patient and the practitioner. Therefore, an automatic injection device that automatically injects a drug solution into an inpatient on a regular basis has been developed, but there are problems such as the device being large and expensive and the behavior of the patient being considerably restrained. there were.

Conventionally, there has long been a demand for a simple automatic injection device that can be applied to inpatients, outpatients, and home-based patients without restraining the behavior of patients. Therefore, in order to meet this demand, the applicant has proposed a portable analgesia device capable of intermittently administering a drug solution to a patient (see Patent Document 1).

In this portable analgesia device, a continuous drug solution injecter having a predetermined volume and duration is prepared in advance, and a predetermined amount of the drug solution is injected into the predetermined amount according to the patient's symptom. After that, the on-off valve is opened to transfer the drug solution into the reservoir for a predetermined long time. During this transfer time, the patient is free to move while wearing the device on his body. The transfer time of the drug solution from the injector to the reservoir is approximately the same as the duration of the effect of the drug solution. When the patient feels pain, the patient himself compresses the reservoir and injects the drug solution in the reservoir into the body via a pressure valve. In preparation for the next pain, the patient can be replenished with the injector by a qualified person at the hospital or at home.

This device is very effective depending on the patient's medical condition. However, depending on the degree of worsening of the medical condition, the type of the affected area, etc., it may be necessary to inject a predetermined amount of the drug solution into the body at the time of irregular pain in parallel with the regular continuous injection of the drug solution for a long period of time. In such a case, a continuous drug solution injector is used in combination with the above-mentioned portable analgesia device. As such a continuous drug solution injector, a continuous drug solution injector developed by the present applicant (see Patent Document 2) is known. This injector can continuously administer the drug solution by utilizing the contractile force of the balloon.

However, when a portable analgesia device and a continuous drug solution injector are used in combination, two drug solution injectors are attached to the patient's body. This is cumbersome for the practitioner and annoying for the patient. Therefore, the applicant has developed a portable analgesia device that can continuously inject the drug solution into the patient's body for a long period of time and at the patient's discretion to irregularly inject a predetermined amount of the drug solution into the body as needed. (See Patent Document 3).

International Publication No. 95/27521 Tokukousho 61-5101 Patent No. 4486604

In the chemical solution supply device such as the conventional portable analgesia device described above, miniaturization, reduction of the number of members, improvement of design freedom, reduction of manufacturing man-hours, and the like are required.

The present invention has been made in view of the above problems, and one of the objects thereof is to provide a chemical liquid supply device that is easy to manufacture.

According to the first aspect, a chemical liquid supply device is provided. This chemical liquid supply device includes a first sheet, a second sheet, a joint portion in which the first sheet and the second sheet are overlapped and bonded to each other, and the first sheet and the second sheet. It has a non-bonded portion in which the sheets of the above are not bonded to each other, and a flow rate control unit for controlling the flow rate of the chemical solution. The non-coupling portion constitutes a chemical liquid flow path through which the chemical liquid passes and a connection portion connected to the flow rate control unit.

According to the second aspect, in the chemical liquid supply device of the first aspect, the connection portion includes an inflow connection portion connected to the inflow port of the flow rate control unit and an outflow connection portion connected to the outflow port of the flow rate control unit. , Have.

According to the third aspect, in the chemical solution supply device of the second embodiment, the non-binding portion further constitutes a reservoir for storing the chemical solution.

According to the fourth aspect, in the chemical solution supply device of the third embodiment, the chemical solution flow path includes a chemical solution continuous injection flow path and a chemical solution intermittent injection flow path. The flow rate control unit includes a first flow rate control unit connected to the connection portion on the chemical liquid continuous injection flow path and a second flow rate control unit connected to the connection portion on the chemical liquid intermittent injection flow path. .. The reservoir is located on the drug solution intermittent injection flow path and downstream of the second flow rate control unit. The drug solution supply device is further located downstream of the reservoir and has a check valve that prevents the drug solution from flowing back into the reservoir.

According to the fifth aspect, in the chemical solution supply device of the first to fourth forms, the first sheet is thinner than the second sheet.

According to the sixth embodiment, a method for manufacturing a chemical liquid supply device is provided. In this manufacturing method, a step of superimposing the first sheet and the second sheet and the first sheet and the second sheet are partially bonded to form a bonded portion and a non-bonded portion. The non-coupling portion includes a chemical liquid flow path through which the chemical liquid passes and a connection portion connected to the flow rate control unit.

It is a top view of the chemical liquid supply apparatus which concerns on this embodiment. It is a top view of the chemical liquid supply device provided with the flow rate control part and the check valve.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings described below, the same or corresponding components are designated by the same reference numerals and duplicated description will be omitted. FIG. 1 is a plan view of the chemical liquid supply device according to the present embodiment. FIG. 2 is a plan view of a chemical liquid supply device provided with a flow rate control unit and a check valve. In this embodiment, as an example of a drug solution supply device, a portable analgesic device for administering an analgesic to a patient will be described. As shown in FIG. 1, the portable analgesia device 10 according to the present embodiment has a first sheet 12 and a second sheet 14. The first sheet 12 and the second sheet 14 are formed of, for example, PVC (polyvinyl chloride) or the like. However, the first sheet 12 and the second sheet 14 are not limited to this, and may be formed of any sheet material having water resistance and flexibility.

As shown in FIG. 1, the first sheet 12 and the second sheet 14 have a joint portion 30 that is partially bonded to each other in a stacked state. The portion indicated by the diagonal line in the figure indicates the joint portion 30. The bonding portion 30 can be formed, for example, by adhering the first sheet 12 and the second sheet 14 with an adhesive, or by heat-sealing (heat sealing). Further, a portion where the first sheet 12 and the second sheet 14 are not bonded, that is, a non-bonded portion 32 is formed on the first sheet 12 and the second sheet 14. In the figure, the portion surrounded by the alternate long and short dash line and not shaded indicates the non-bonded portion 32. As will be described later, the non-coupling portion 32 constitutes the drug solution flow path through which the drug solution passes, the connection portion to which the flow rate control unit is connected, and the reservoir for storing the drug solution in the portable analgesia device 10. That is, the non-bonding portion 32 constitutes a gap between the first sheet 12 and the second sheet 14 formed by the non-bonding of the first sheet 12 and the second sheet 14, and this gap. The chemical solution can pass through, or a flow rate control unit, which will be described later, can be connected. The first sheet 12 and the second sheet 14 are bonded together as described above to form a bonded portion 30 and a non-bonded portion 32, and then punched along a two-dot chain line in FIG. 1 to form a bonded portion 30 and a non-bonded portion 32. It is processed into the outer shape shown in FIG.

Further, the portable analgesia device 10 has an inlet 16, a first connection portion 17, a second connection portion 18, a third connection portion 19, a reservoir 20, and an outlet 21. These are included in the non-coupling portion 32. The inflow port 16 is configured to communicate fluid with an external chemical solution dispenser (not shown) for continuously supplying the drug solution to the portable analgesia device 10, and for example, a connector for fluid communication with the drug solution supply device may be connected. can. Here, the external chemical liquid supply device may be a pump utilizing the contraction force of the balloon, an electric syringe pump, a vacuum type (negative pressure type) drive pump, or the like. The outlet 21 is configured to communicate with the patient's body, and for example, a connector for fluid communication with a catheter can be connected. The outlet 21 is configured to discharge the chemical liquid discharged from the first flow rate control unit 54 (see FIG. 2) described later or the check valve 56 (see FIG. 2) described later from the reservoir 20.

The first connection portion 17 is a cavity composed of the non-coupling portion 32, and has a first inflow connection portion 17a that communicates with the inflow port 16 and a first outflow connection portion 17b that communicates with the outflow port 21. Have. As shown in FIG. 2, the first flow rate control unit 54 is connected to the first connection unit 17. Specifically, the first inflow connection unit 17a is connected to the inflow port 54 of the first flow rate control unit 54, and the first outflow connection unit 17b is connected to the outflow port 54b of the first flow rate control unit 54. The first flow rate control unit 54 is configured to control the flow rate of the chemical solution passing therethrough.

The second connection portion 18 is a cavity composed of the non-coupling portion 32, and has a second inflow connection portion 18a that communicates with the inflow port 16 and a second outflow connection portion 18b that communicates with the outflow port 21. Have. As shown in FIG. 2, a second flow rate control unit 52 is connected to the second connection unit 18. Specifically, the second inflow connection unit 18a is connected to the inflow port 54a of the second flow rate control unit 52, and the second outflow connection unit 18b is connected to the outflow port 54b of the second flow rate control unit 52. The second flow rate control unit 52 is configured to control the flow rate of the chemical solution passing therethrough.

The third connection portion 19 is a cavity composed of the non-coupling portion 32, and has a third inflow connection portion 19a that communicates with the reservoir 20 and a third outflow connection portion 19b that communicates with the outflow port 21. .. As shown in FIG. 2, a check valve 56 is connected to the third connection portion 19. Specifically, the third inflow connection portion 19a is connected to the inflow port 56a of the check valve 56, and the third outflow connection portion 19b is connected to the outflow port 56b of the check valve 56. The check valve 56 blocks the backflow of the chemical solution to the reservoir 20 and opens when the pressure from the reservoir 20 exceeds a predetermined pressure to allow the chemical solution to pass from the reservoir 20 to the outlet 21. It is composed of. As the check valve 56, for example, an umbrella valve or the like can be adopted. The reservoir 20 is arranged on the downstream side of the second flow rate control unit 52 and on the upstream side of the check valve 56, and is configured to store the chemical liquid that has passed through the second flow rate control unit 52.

The portable analgesia device 10 has, as a flow path through which the drug solution passes, a drug solution continuous injection flow path 40 through which the drug solution continuously supplied passes, a drug solution intermittent injection flow path 50 through which the drug solution intermittently supplied passes, and the like. Have. The drug solution continuous infusion flow path 40 starts from the inflow port 16, passes through the inflow pipe line 16a, the continuous infusion line line 41, the first connection portion 17, and the outflow line line 21a, and extends to the outflow port 21. The chemical liquid intermittent injection flow path 50 starts from the inflow port 16 and passes through the inflow pipe line 16a, the intermittent injection pipe line 51, the second connection part 18, the reservoir 20, the third connection part 19, and the outflow pipe line 21a. Extends to the outlet 21. As shown in FIG. 1, the inflow pipe line 16a and the outflow pipe line 21a can be shared with the chemical liquid intermittent injection flow path 50, but the present invention is not limited to this, and the chemical liquid continuous injection flow path 40 and the chemical liquid intermittent injection flow path 50 are each. However, a pipeline connecting to the inflow port 16 and the outflow port 21 may be provided.

Further, when the portable analgesia device 10 is used, it can be stored in a housing or case (not shown) so that the user can easily use it. The portable analgesia device 10 has a plurality of holes 60 and a notch 62 for aligning the portable analgesia device 10 in a housing or case (not shown) that houses the portable analgesia device 10. The portable analgesia device 10 can be fixed to the housing or the case by engaging a pin or the like provided in the housing or the case with the plurality of holes 60 and the notch 62.

Next, a method of using the portable analgesia device 10 shown in FIG. 2 will be described. First, the drug solution feeder is fluidly connected to the inflow port 16 of the portable analgesia device 10 shown in FIG. 2 via a connector or the like, and the catheter or the like is fluidly connected to the outflow port 21 via the connector or the like. The chemical solution feeder is driven to continuously supply the chemical solution from the inflow port 16. As the drug solution, for example, physiological saline, glucose solution, antibiotic solution, sedative, analgesic, hevalin, nitroglycerin solution and the like can be used, but the drug solution is not limited thereto. At this time, the chemical solution passes through the inflow pipe 16a and is supplied to the continuous injection pipe 41 and the intermittent injection pipe 51. The chemical solution supplied to the continuous infusion pipe 41 is continuously discharged from the outflow port 21 through the outflow pipe 21a while the flow rate is controlled by the first flow rate control unit 54. On the other hand, the chemical solution supplied to the intermittent injection pipe 51 is supplied into the reservoir 20 while the flow rate is controlled by the second flow rate control unit 52, and the inside of the reservoir 20 is filled with the chemical solution. The chemical solution supplied into the reservoir 20 reaches the check valve 56. The check valve 56 is preferably configured so as not to be opened by the pressure in the reservoir 20 at this time.

When the user begins to feel pain or the like, the user compresses (presses) the reservoir 20 with a finger or the like. As a result, the pressure in the reservoir 20 rises, the check valve 56 opens, and the chemical solution in the reservoir 20 passes through the check valve 56 and is discharged to the outflow port 21. When the pressure in the reservoir 20 drops due to the discharge of the chemical solution in the reservoir 20, the chemical solution is re-reservoired via the inflow port 16, the inflow pipe line 16a, the intermittent injection pipe line 51, and the second flow rate control unit 52. It is replenished within 20.

Next, a method of manufacturing the portable analgesia device 10 shown in FIG. 1 will be described. First, a sheet such as PVC constituting the first sheet 12 and a sheet such as PVC constituting the second sheet 14 are superposed. These sheets are preferably sized to form a plurality of portable analgesia devices 10. The two stacked sheets are partially bonded by, for example, heat welding to form a bonded portion 30 and a non-bonded portion 32. Then, the two sheets are punched according to the two-dot chain line shown in FIG. As a result, the portable analgesia device 10 is manufactured. When the two sheets are of a size capable of forming a plurality of portable analgesia devices 10, a plurality of coupling portions 30 and non-coupling portions 32 of the portable analgesia device 10 shown in FIG. 1 are provided from the two sheets. It can be formed and punched out from a plurality of portable analgesia devices 10. It is also possible to adjust the capacity of the reservoir 20 by processing and projecting the portion forming the reservoir 20 of the two sheets when the two sheets are combined. Specifically, for example, a mold is pressed from one surface of two stacked sheets to form a concave shape of the reservoir 20, and the sheets are joined in that state. After that, the space of the reservoir 20 is formed by pulling one sheet constituting the concavely formed reservoir 20 away from the other sheet. Further, for example, the volume in the reservoir 20 can be increased by joining the sheets while separating the portions constituting the reservoir 20 of the two stacked sheets from each other by vacuum adsorption or the like.

As described above, the portable analgesia device 10 shown in FIG. 1 can be manufactured only by partially joining the two sheets, so that the manufacturing can be facilitated. In addition, the portable analgesia device 10 can manufacture all of the drug solution pipeline, the reservoir 20, the first connection portion 17, the second connection portion 18, the third connection portion 19, and the like from the two sheets. Therefore, the portable analgesia device 10 can be downsized, the number of members constituting the portable analgesia device 10 can be reduced, and the manufacturing man-hours can be reduced. Further, since the portable analgesia device 10 having various shapes can be manufactured only by adjusting the joint portion and the punched portion of the two sheets, the degree of freedom in design is improved.

In the manufacture of the portable analgesia device 10, of the two sheets, for example, the thickness of the sheet constituting the first sheet 12 may be thinner than the sheet constituting the second sheet 14. In that case, since the first sheet 12 is more flexible, the first sheet 12 is more likely to swell when the drug solution is supplied to the portable analgesia device 10. As a result, one surface (the surface on the first sheet 12 side) of the reservoir 20 swells, so that the user can easily press the reservoir 20.

Although the embodiments of the present invention have been described above, the embodiments of the invention described above are for facilitating the understanding of the present invention and do not limit the present invention. The present invention can be modified and improved without departing from the spirit thereof, and it goes without saying that the present invention includes an equivalent thereof. In addition, any combination or omission of the claims and the components described in the specification is possible within the range in which at least a part of the above-mentioned problems can be solved, or in the range in which at least a part of the effect is exhibited. be.

10 ... Portable analgesia device 12 ... First sheet 14 ... Second sheet 16 ... Inflow port 17 ... First connection part 17a ... First inflow connection part 17b ... First outflow connection part 18 ... Second connection part 18a ... Second 2 Inflow connection 18b ... 2nd outflow connection 19 ... 3rd connection 19a ... 3rd inflow connection 19b ... 3rd outflow connection 20 ... Reservoir 21 ... Outlet 30 ... Bond 32 ... Non-coupling 40 ... Chemical solution Continuous injection flow path 50 ... Chemical solution intermittent injection flow path 52 ... Second flow rate control unit 54 ... First flow rate control unit 56 ... Check valve

Claims (5)

The first sheet and
The second sheet and
A joint portion in which the first sheet and the second sheet are overlapped and bonded to each other,
A non-bonded portion in which the first sheet and the second sheet are not bonded to each other,
It has a flow rate control unit that controls the flow rate of the chemical solution,
The non-coupling portion constitutes a chemical liquid flow path through which the chemical liquid passes, a connection portion connected to the flow rate control unit, and a reservoir for storing the chemical liquid.
The chemical solution flow path has a chemical solution continuous injection flow path and a chemical solution intermittent injection flow path.
The flow rate control unit includes a first flow rate control unit connected to the connection portion on the chemical liquid continuous injection flow path and a second flow rate control unit connected to the connection portion on the chemical liquid intermittent injection flow path. death,
The reservoir is located on the drug solution intermittent injection flow path and downstream of the second flow rate control unit.
Liquid supply device. In the liquid supply device according to claim 1,
The connection portion is a liquid supply device having an inflow connection portion connected to the inflow port of the flow rate control unit and an outflow connection portion connected to the outflow port of the flow rate control unit. In the liquid supply device according to claim 1 or 2.
The liquid supply device is further arranged downstream of the reservoir and has a check valve for blocking the backflow of the drug solution into the reservoir. In the liquid supply device according to any one of claims 1 to 3.
The first sheet is a liquid supply device thinner than the second sheet. It is a manufacturing method of liquid supply equipment.
The process of superimposing the first sheet and the second sheet,
It comprises a step of partially joining the first sheet and the second sheet to form a bonded portion and a non-bonded portion.
The non-coupling portion includes a chemical liquid flow path through which the chemical liquid passes, a connection portion connected to the flow rate control unit, and a reservoir for storing the chemical liquid.
The chemical solution flow path has a chemical solution continuous injection flow path and a chemical solution intermittent injection flow path.
The flow rate control unit includes a first flow rate control unit connected to the connection portion on the chemical liquid continuous injection flow path and a second flow rate control unit connected to the connection portion on the chemical liquid intermittent injection flow path. death,
The manufacturing method further comprises arranging the reservoir on the chemical liquid intermittent injection flow path and downstream of the second flow rate control unit.

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